/// <summary>
 /// Gets the SREG field value.
 /// </summary>
 public string GetFieldValue(OpenIDSimpleRegistrationField field)
 {
     if (!Values.ContainsKey(field))
     {
         return(null);
     }
     return(Values[field]);
 }
 /// <summary>
 /// Gets the SREG field value.
 /// </summary>
 public string GetFieldValue(OpenIDSimpleRegistrationField field)
 {
     if (!Values.ContainsKey(field)) return null;
     return Values[field];
 }